great vs winner

great and winner both are nouns.

Word	Noun	Adjective	Verb	Adverb
great	Yes	Yes	No	No
winner	Yes	No	No	No

As nouns, winner is a hypernym of great; that is, winner is a word with a broader meaning than great:

Other hypernyms of great include achiever, succeeder, success.

great (noun)	winner (noun)
a person who has achieved distinction and honor in some field	the contestant who wins the contest
	a gambler who wins a bet
	a person with a record of successes

great (adjective)	winner (adjective)
excellent
in an advanced stage of pregnancy
uppercase
remarkable or out of the ordinary in degree or magnitude or effect
of major significance or importance
relatively large in size or number or extent; larger than others of its kind